I don't use React much, but from a quick look at your docs now it looks like they are much better than last time I saw them, and I can't find any major points of criticism.
I like the fact that you have the separation between getting started/tutorials, main concepts, advanced concepts, and an API reference. The notes/caveats/etc seem reasonable.
It would be nice to link to the source in the API reference, and there are a lot of mentions of APIs that could be linked (pretty much any function name in a body of text could be linked I think), but apart from that these docs look great.
That said, I haven't had to use them day after day for 6 years like I have with the Django documentation!
One thing you might want to consider for the future would be switching between versions of React. Django has a version switcher at the bottom of the screen that lets you jump between versions, shows banners when reading the docs for unreleased/insecure/old versions (in case users are linked to them), and also mentions when APIs were added in recent versions in the text.
I like the fact that you have the separation between getting started/tutorials, main concepts, advanced concepts, and an API reference. The notes/caveats/etc seem reasonable.
It would be nice to link to the source in the API reference, and there are a lot of mentions of APIs that could be linked (pretty much any function name in a body of text could be linked I think), but apart from that these docs look great.
That said, I haven't had to use them day after day for 6 years like I have with the Django documentation!
One thing you might want to consider for the future would be switching between versions of React. Django has a version switcher at the bottom of the screen that lets you jump between versions, shows banners when reading the docs for unreleased/insecure/old versions (in case users are linked to them), and also mentions when APIs were added in recent versions in the text.